You need to then display the numerical values of those characters, such as 0x00, 0x05 and so on. You can't display a character with ASCII value 0x00, because there is no such printable character. Other control characters do weird things, so should never be printed, such as 0x07 (BEL) and 0x0C (FF). Trying to output data containing the special control characters can *really* screw things up.

You might like to take a look at how such data is displayed by my module Data::Hexdumper. Don't look at the code though, it's old and nasty :-)

In reply to Re^3: Displaying NUL in a TK::Text widget by DrHyde
in thread Displaying NUL in a TK::Text widget by thor

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